TornadoLiveMap

North Platte River below Gray Reef Reservoir — water level right now

Natrona County, Wyoming · NWS gauge GRFW4
Loading the latest reading…
–
current stage (ft)
 
9.9
record crest
set 1983-04-27
–
flood status
official NWS category
Official NOAA forecast → USGS data → Full US flood map →

Flood stages at this gauge

Where the water stands right now against the four official thresholds:

action · 9
Flood stageLevel (ft)What it means
Action stage9water is approaching flood level — time to pay attention

Highest floods on record here

#Crest (ft)Datevs. minor flood stage
19.91983-04-27—
28.841980-04-28—
38.571973-05-13—
48.151974-04-30—
57.291986-06-07—
66.991965-06-17—
76.951984-05-20—
86.862011-06-27—
96.421963-06-16—
106.262010-06-24—
115.572012-08-23—
125.571987-04-21—

Historic crests recorded at this gauge by the National Weather Service — the 12 highest on file.

Where this gauge is

The marker is this gauge; nearby gauges load live and are clickable.

Nearby river gauges

Reservoirs at Alcova Reservoir 2 mi away · loading… Sweetwater River near Alcova 24 mi away · loading… North Platte River at Casper 27 mi away · loading… Medicine Bow River near Hanna 40 mi away · loading… Little Medicine Bow River at Boles Spring 49 mi away · loading… North Platte River near Sinclair 52 mi away · loading…

Gauge details

NWS gauge IDGRFW4
USGS site06642000
CountyNatrona
StateWyoming
NWS forecast officeRiverton
River forecast centerMissouri Basin River Forecast Center
Coordinates42.574, -106.692
Time zoneMST7MDT
Turn Around, Don't Drown. Six inches of moving water can knock you off your feet and twelve inches can float a car. Never drive around barricades or into water of unknown depth — most flood deaths happen in vehicles.

Questions about North Platte River below Gray Reef Reservoir

Is North Platte River below Gray Reef Reservoir flooding right now?

The live reading at the top of this page answers that: the gauge is compared against its official NWS flood stages every 15 minutes. Blue means normal, yellow is action stage, orange minor, red moderate and dark red major flooding.

What is flood stage for North Platte River below Gray Reef Reservoir?

action stage 9 ft. These are official National Weather Service thresholds set specifically for this gauge, not generic values.

What is the record flood at North Platte River below Gray Reef Reservoir?

The highest crest on file at this gauge is 9.9 ft, reached on 1983-04-27. The full list of the highest crests is in the table on this page.

Where does this data come from?

From the NOAA National Water Prediction Service, the official U.S. river gauge network — a U.S. government work in the public domain. Live stage is refreshed every 15 minutes; flood thresholds and historic crests are refreshed monthly. For life-safety decisions follow NWS Riverton and local emergency management.